Ruby-pjn setter



(No Model.)

O.-HOFER.

RUBY PIN SETTBR. No. 367,101. Patented July 26, 1887.

N. FETERS. Phumumn m h". Washingloll, n c.

UNITED, STATES PATENT OFFICE.

GHARLESHOFER, \NALTHAM, MASSACHUSETTS.

RUBY-PIN SETTER.

SPECIFICATION forming part of Letters Patent No. 367,101, dated July 26. 1857,

Application filed February 19, 1887. Serial No. 228.182. (No model.)

To all whom it may concern,-

Be it known that I, CHARLES HOFER, of Waltham, county of Middlesex, and State of Massachusetts, have invented an Improvement in Tool for Setting Pins in Roller-Tables in the Manufacture of WVatches, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

In watch-making the so-called roller-table is provided with a pin commonly called a jewel-pin, which is placed in ahole made in the roller-table, where it is secured in position at right angles to the surface of the table by means of shellac, which is melted and thus permitted to surround the pin in the table. The operation of setting the pin in the rollertable is somewhat difficult, because the pin is quite small. To do this work with great ease and accuracy I have devised a tool which is adapted to hold the pin while the table is be ing heated and the shellac applied to confine the pin.

My improved tool consists, essentially, of a hollow handle containing a rod to operate a clamp, the said tool also having a presser made as a lever acted upon by a spring, the fulcrum of the presser'being substantially at right angles to the length of the rod operating the clamp.

My invention consists, essentially, in ajewelv pin-setting tool. composed of a hollow handle haying a longitudinally-m0vable rod carrying a clamp and of a spring-actuated presser-lever having its fulcrum at right angles to the rod actuating the clamp, the said clamp and presser serving to hold both the pin and the roller'table in proper position, the pin being within the hole in the table while the table is being heated and the shellac is being applied to fasten the pin.

Figure 1 in side elevation represents one of my improved tools as holding a pin and table, the said figure also showing a piece of shellac and a lamp to heat the table and melt the shellac. Fig. 2 is a longitudinal section of Fig. 1, the lamp and shellac being omitted, the clamp being open for the reception of the jewel-pin. Fig. 3 is an enlarged longitudinal 0 section of the front end of the tool with the table and pin in place. Fig. 4 is a right-hand end view of Fig. 3; and Fig. 5 is a modification of my invention.

Referring to the drawings, a represents a tubular shank or hand-piece, having within it a longitudinallymovable rod, 1), provided at its outer end with a head, b, to be acted upon by one of the fingers of the operator, the other end of the rod being provided with a clamp, as b*, the said clamp preferably being circular and being attached to the rod in such manner that the clamp may be moved not only toward and from the block a at one end of the handpiece, but also so that it may be rotated with the rod 22, rotation of the rod enabling portions of the periphery of the clamp to be brought in succession next that part of the head a opposite the end of the presser (Z. This rotation of the clamp is desirable, for thereby the shellac is prevented from accumulating on any one part of the clamp, which would make it necessary for the operator to stop and remove the shellac.

The end of the head a, as shown in Figs. 2 to 4, is grooved, as at 2, to receive the jewelpin r, the clamp shown in Figs. 1 to 4 be-' iug arranged to receive between it and the head a the jewel-pin and hold it there, as in Figs. 1 and 4, while the roller-plate 6, having the usual hole at one side its center, is placed in position to enable the jewel-pin to be inserted into the said hole.

The roller-plate applied to the head a, as shown bestin Fig. 3, is held in that position by means of the presser d, having its fulcrum on a screw or stud, (2, arranged at a right angle to the clamp-actuating rod 1), the said stud being, as herein shown, extended through an ear, 0?, held upon the hand-piece by a screw, d the rear end of the said presser being acted upon by a suitable spring, which normally keeps the front end of the presser pressed to ward the head a. piece is surrounded byaspiral spring, f, which is so placed upon the rod and within the handa by both the clamp and the presser, the

roller-plate at the end of the tool is subjected The rod 1) within the hand-- IOO to the heat 01' an alcohol or other lamp, Z, and at such time the end ofa fine strand of shellac, as h, is applied directly to the plate where the end of thejewel-pin is exposed, the said shellac belng melted and running about the end of the ewel-pin r, so that when the shellac is cooled, which is done quickly after the removal of the tool from the lamp, the pin is held securely in place.

I11 Fig. 5, showing a modification of my invention, the spring for actuating the prcsser is made separate from the p resser, and instead of clamping the jewel-pin between the clamp I)? and the head (1 I have provided the upper side of the head with a recess or grooved bloclc, as m, for the reception of the j ewel-pin, thelalter beingheld in the groove of the block by the presser d, and in this modified form of tool the clamp at the end of the rod b, which 1s shortened, is made to hold the roller-table; or, in other words, the tool shown in Fig. 4 operates conversely to that described in Figs. 1 to l.

I claim- 1. As an improved article of manufacture, the herein-described jewel-pin-setting tool, it consisting, essentially, of a hollow hand-piece, a spring-actuated rod therein provided with a clamp, ahead-piece connected to the handpiece, and a lever-like presser and a spring to actuate it, the fulcrum of the presser being substantially at right angles to the axis of the rod within the handle-piece.

2. The hollow hand-piece provided at one end with the grooved head a, the rotating rod 1), extended through the said hand-piece and provided with a clamping-disk, b the said rod being surrounded by a spring combined with a level-dike presser and a spring to operate it, substantially as described.

In testimony whereot'l have signed my name to this specification in the presence of two subscribing witnesses.

oH'AnLEs Horria.

Witnesses:

A. R. Cnlinsny, G120. H. STONE. 

